/*
 * =====================================================================================
 *
 *       Filename:  foo.c
 *
 *    Description:  foo function
 *
 *        Version:  1.0
 *        Created:  09/24/2017 04:05:25 PM
 *       Revision:  none
 *       Compiler:  gcc
 *
 *         Author:  YOUR NAME lzm, 
 *   Organization:  
 *
 * =====================================================================================
 */

#include<stdio.h>
void f(void);

int x=155213;

int main()
{
	printf("x=%d\n",x);
	f();
	printf("x=%d\n",x);
	return 0;
}
